LANSING, Kan. –  The bodies of the two men executed for the 1959 murders of a Kansas family that became infamous in Truman Capote's true-crime book "In Cold Blood" were exhumed Tuesday in an effort to solve slayings of a Florida family killed weeks later.

Kyle Smith, deputy director of the Kansas Bureau of Investigation, said bone fragments were collected from the skeletal remains of Richard Hickock and Perry Smith, who were hanged for the murders of Herb and Bonnie Clutter and their children in Holcomb, Kan., on Nov. 15, 1959.

The fragments were collected at the request of a Sarasota County Sheriff's detective, who has been trying to determine whether Hickock and Perry Smith were responsible for the deaths of Cliff and Christine Walker and their two young children on Dec. 19, 1959, in their home in Osprey, about four hours northwest of Miami near Sarasota. Smith and Hickock fled to Florida after the Clutter murders....